Oiling device for shaft-bearings.



F. W. KROGH.

OILING DEVICE For: SHAFT BEARINGS. APPLICATION FILED JUNE 30; 1913- Patented June 20, 1916.

3 SHEETS-SHEET I.

lglIIIIl/IllI/glllll F. W. KROGH.

OILING DEVlCE FOR SHAFT BEARINGS. APPLICATION FILED luuzso. 191s.

Patented June 20; 1916.

3 SHEETS-SHEET 3- FERDINAND W. KROGH, OF SAN FRANCISCO, CALIFORNIA.

OILING DEVICE FOR SHAFT-BEARIN GS.

' Specification of Letters Patent.

Patented June 20, 19 16.

Application filed June 30, 1913. Serial No. 776,543.

To all whom it may concern:

\ Be it known that I, FERDINAND W. KRoGH,

rotary shafts commonly used in connectiontherewith being located in inaccessible places; and my invention consists first in a hollow pump shaft adapted to contain the lubricating material having outlets located adjacent to the bearings; second, in combining means for forcing the lubricant into the hollow space and through the outlets aforesaid; third, with means for returning the waste oil, and fourth in the novel parts, combinations and arrangements set forth in the following description, particularly pointed out in the claims at the end hereof, and illustrated in the accompanying three (3) sheets of drawings, of which Figure 1 is'a vertical central sectional view of the upper portion of a deep well, and the pumping apparatus contained therein, showing the upper parts of my invention in operative position and one form of my means for forcing the lubricant into the pump shaft; Fig. 2 is a similar sectional view of the lower portion of such a well and the pumping apparatus, showing the lower parts of my invention imoperative position therein; Fig. 3 is a vertical central sectional view of a modified form of my means for forcing the lubricant into the pump shaft; Fig. 4 is a vertical central sectional view of a modification in the constructional features of the device shown in Fig. 3; and Fig. 5 is a vertical central sectional view on a larger scale of the lubricant forcing device shown in Fig. 1, showing a modified form of the specific forcing device.

The same symbol of reference marks the same part in whichever view said part may appear.

Describing my invention in detail, 1 is a deep well lined by the casing 2. The pump casing 3 is located within the well casing 2,

and carries the water from the pump' t to the surface and discharges it from the pipe Inside the pump casing 3 is a shaft casing 6 WhlCh extends from the top of the well to the pump 4:. At suitable distances apart along the inside of the shaft casing, bearings 7 are located; and said bearings are provided with passages 8 vertically directed to allow the free upward movement of the water and oil in the casing 6.

The pump is rotated by a hollow shaft 9, having outlets 10 located at the points where the bearing surfaces engage the shaft, and adapted to pass the lubricant from the hollow shaft to said bearings. The waste -oil passes into easing 6, where it tends to rise to the surface of the water and is drawn ofi through pipe 11 and cook 12. p

The lubricant fills the hollow space of the shaft 9, and is supplied from the receptacle 13 by pressing pump handle 14, Fig. 1, and piston 15, the valve 16 cutting off the supply unless the handle 14 is depressed.

In the modification shown in Fig. 3, a constant pressure is supplied by the stand pipe 17, which forces the lubricant into the space 18 and into the hollow shaft 9 through passages 19. In the form shown in this figure a lower member, 20, of the device is bolted to the bed 21 at the top of the well; and an upper member, 22, is bolted to the lower member by bolts 23 and 24. U-shaped packing rings 25 and 26. are secured in position within the space 18 by supports 27 and plug 28 closes the upper opening of the shaft to'prevent thereby the dust or other matter getting into the hollow space therein.

In the'modification shown in Fig. 4, the upper and lower members of Fig. 3 are exchanged for right and left members 29 and 30, which are held together by bolts 31. The

lubricant is forced into the space32 into which the top of shaft 9 opens; and a U- shaped packing ring 33 is held in position by the supports or cleat 34.

In the modification shown in Fig. 5, the handle 14, shown in Fig. 1 is replaced by a screw 35 and hand-Wheel 36, by means of which the piston 15 may be depressed.

By the described device I' can lubricate the bearings of deep well pumps without the use of auxiliary oil pipes, making the pump shaft perform the additional function of conveying the lubricant to the bearing surfaces' In the form shown in Fig. 1, the valve 16 keeps the water from entering the lubricant receptacle, and valve 37, shown in Figs. 3 and 4, performs the same function for the stand pipe 17. The waste oil being of lighter specific gravity than water finds its way to the surface and is drawn off as explained above.

Having described my invention to enable others skilled in the art to which the same appertains, to practise the same and believing I have produced novel and useful improvements in that class of apparatus, what I claim and desire to secure by United States Letters Patent is 1. In a device of the character specified, the combination with the hollow shaft of a deep Well pump and the bearings thereof, means connected to said shaft for oiling said bearings and means to remove waste oil therefrom.

2. In a device of the character specified, the combination with the hollow shaft of a deep well pump and the bearings thereof, means for oiling said bearings and means connected to said bearings adapted to remove waste oil therefrom.

3. In a device of the character specified,

the combination with the hollow shaft of a deep well pump and the bearings thereof, means for oiling said bearings and means for drawing ofi' waste oil from said bearings.

4. In a device of the character specified, the combination with a deep well pump of bearings having vertically disposed passages, a hollow shaft havingoutlets, bearings located near said outlets, a pump casing supporting said bearings, and means for drawing ofi waste oil brought to the surface by thewater in said casing.

5. In a device of the character specified, the combination with the hollow shaft of a deep Well pump and the bearings thereof. a casing for said bearings, means for oiling said bearings and means for drawing ofl waste oil from said casing.

In testimony that I claim the foregoing I have hereto set my hand this 26th day of May, 1913, in the presence of witnesses.

FERDINAND \V. KRGGH.

\Vitnesses:

CERF ROSENTIIAL, BLANCIIE CHESTER. 

